Python

Yes, you got the gist of how it works.

To give a bit more context, functions are basically snippets of code that are executed when called. One way to look at the input("What's your name?") function is this (not how the actual function looks like, just an abstraction):

function input(text_to_show):
    print(text_to_show)
    input_from_user = get_keyboard_input()
    return input_from_user

That return is something you will see often in many functions, and when you call a function, that's the result it sends to the line that called. So, if input was actually coded like this:

function input(text_to_show):
    print(text_to_show)
    input_from_user = get_keyboard_input()
    return 1

Every time you called it, you would receive 1 as a result. In your example, nam = input('Who are you? ') would always assign 1 to nam, because the return is 1 rather than the variable that receives whatever you typed in.